Radeon HD 7970 PCS+ VORTEXII Edition is a special Edition of the Radeon HD 7970. See the page of the standard edition for more information. On this version the central unit was raised from 925MHz to 1100MHz and the operating memory clock from 1375MHz to 1425MHz, though the latter will not yield any extra performance. It also features the PCS-Professional Cooling System and the Vortex II – The Whirlwind Technology. Benchmarks indicate a 9% performance boost when compared to the standard Radeon HD 7970.